Aluminum doors and windows with good sealing

High-quality aluminum alloy doors and windows, fine processing, careful installation, good sealing performance, and easy opening and closing. Inferior aluminum alloy doors and windows, blindly select aluminum profile series and specifications, processing in shoddy, sawing instead of milling, installation not as required, poor sealing performance, uncomfortable opening and closing, not only air leakage, glass explosion, but also In strong wind and external force, it is easy to scrape or knock...